The socket wrench is mainly composed of socket head, sliding handle, ratchet handle, quick crank, joint and connecting rod.
Various handles are suitable for various occasions. Based on the principle of convenient operation or improving efficiency, the specification of common socket wrench is 10~32m. Many special socket wrenches are used in automobile maintenance, such as spark plug socket wrenches, hub socket wrenches and tire nut socket wrenches, as shown in figure 1-39 and figure 1-40.
How to use a socket wrench:
Socket wrenches are mainly used to tighten or loosen bolts and nuts with large torque or special head shape.
According to the requirements of working space and torque, the connecting rod and suitable sleeve can be selected for operation.
When using, we must pay attention to the shape and size of the sleeve and the bolt or nut, and usually no external force application device is allowed.
When in use, the sleeve is sleeved on the square tenon of the matching handle (if necessary, it can be used with a long telescopic rod, a short telescopic rod or a universal joint), then the sleeve is sleeved on a bolt or a nut, the left hand holds the joint between the handle and the sleeve, the sleeve is coaxial with the disassembled or fastened bolt, and the right hand holds the matching handle forcibly.
In the process of using the sleeve, hold the joint between the handle and the sleeve tightly with your left hand, and don't shake it, so as to avoid the sleeve slipping out or damaging the edges and corners of the bolt or nut. Push hard in your own direction to prevent slipping and hurting your hands.
Do not use a cracked or damaged sleeve. This kind of sleeve will cause slippage, thus damaging the edges and corners of bolts or nuts. When disassembling, it is forbidden to knock the sleeve into the hexagon of the deformed bolt or nut with a hammer to avoid damaging the sleeve.
When using the hexagon socket of a screwdriver to remove or tighten the screw, be sure to check whether there are sundries in the hexagon or flower-shaped hole of the bolt head, and clean it up in time before operation, so as to avoid damaging the bolt or hurting yourself due to the slippage of the tool.
When using the screwdriver sleeve, be sure to give the screwdriver sleeve enough downward pressure to prevent the screwdriver sleeve from slipping out of the screw head.